CHARGE & MAINTAIN TWO BATTERIES WITH ONE CHARGER! Its common knowledge that a healthy battery is a must for any UTV stereo system to function properly. By simply using our dual bank charger / maintainer, your Can-Am X3, Polaris RZR or Can-Am Defender batteries will always be at their best to deliver max voltage to your sound system. Simply use both supplied battery harness to connect from your 12 volt battery to your walls outlet, its that easy. This will extend the life of both batteries. We highly recommend this item to all UTV owners to ensure you get the most out of all your accessories. Included: 1 - Charger Maintainer 2 - Battery Ring Terminal Plug Harness 2 - Universal Battery Clamp Harness